延安附近想过夜电话联系

Over 20 years of research and development, the company has produced more than 30 million high-quality customers
Focus on improving pass through rate for SMT Enterprises
lower production cost
0755-29749682
eighteen billion nine hundred and twenty-eight million four hundred and three thousand four hundred and thirty-five
Focus on improving pass through rate for SMT Enterprises
lower production cost
Industry news
Your current position: home page / Lin Chuan information / Industry news

Production process of SMT steel mesh manufacturer, laser SMT steel mesh compared with other ordinary SMT steel mesh

Source: Lin Chuan precision article author: Lin Chuan precision time: March 7, 2020 18:35 reading: 1697

SMT steel mesh manufacturer is specialized in providing steel mesh for SMT SMT SMT industry. The main purpose of SMT steel mesh is to make solder paste printed on circuit board, and then paste components through SMT machine. After reflow soldering, SMT chip processing is completed. Steel mesh is the first process of SMT industry, so the steel mesh produced by steel mesh manufacturer has a direct impact on SMT chip processing plant Quality, today let's understand the production process of SMT steel mesh manufacturers, laser SMT steel mesh with other ordinary SMT steel mesh comparison.

 Special steel mesh produced by SMT steel mesh manufacturer

Special steel mesh produced by SMT steel mesh manufacturer

SMT steel mesh manufacturer:

SMT steel mesh manufacturers generally have two kinds of process: etching SMT steel mesh process, laser SMT steel mesh process; because of environmental protection and technical problems, some manufacturers have: electropolishing SMT steel mesh process, nano SMT steel mesh process, electroforming SMT steel mesh process, ladder SMT steel mesh process; the following is a one by one introduction

  Etching process of SMT steel mesh:

Due to the chemical solution corrosion, the etching section is not smooth and the precision is low, and the open cross section forms a bowl shape with two ends, which is very unfavorable for the release of solder paste.

 Etching SMT steel mesh

Etching SMT steel mesh

   Laser SMT steel mesh process:

Because the light is linear, the hole wall carved is relatively vertical, but it is formed by point needle punching. Therefore, the hole wall is naturally rough, and the demoulding performance of solder paste is better than that of etching, but the best effect can not be achieved. Therefore, it is impossible to achieve the eight shaped hole wall proposed by the laser net.

 Laser SMT steel mesh

Laser SMT steel mesh

Nano SMT steel mesh process:

Through the polymer bonding on the open inner wall of the steel plate and the surface of the contact surface with the PCB board, the anti oil film is formed, and the adhesion of solder paste and soldering aid is reduced. The hardness of the steel sheet can be increased by 10% ~ 30% (i.e. the hardness reaches 400 ~ 450hv) by attaching a metal coating of about 500-1000 nm; Moreover, the nano coating has super hydrophobicity and self-cleaning function, so as to reduce the solder paste residue on the back and reduce the wiping frequency. The original 3-5 tablets can be wiped once instead of 20-60 tablets. The wiping times of high-precision products such as mobile phones are 6-15, without affecting the printing and brushing effect.

 Nano SMT steel mesh

Nano SMT steel mesh

   Electroforming process of SMT steel mesh:

The metal material of nickel particles can form steel mesh opening and the whole nickel sheet by electric accumulation through the mold. It has good demoulding effect, no friction force, high precision, suitable thickness of 0.02 to 0.13 mm, and the minimum hole can be 0.02 mm

 Electroforming of SMT steel mesh

Electroforming of SMT steel mesh

   Step SMT steel mesh process:

The step etching (SMT) needs to be etched and then etched. The same thickness of solder paste on the same PCB can meet the needs of all the components. It can be divided into: local thickening steel mesh (i.e. large area thinning) and local thinning steel mesh (small area thinning).

 Stepped SMT mesh - local thinning

Stepped SMT mesh - local thinning

   Electrolytic SMT steel mesh process:

It is divided into pre sequence hole forming and post sequence hole wall treatment. Processing process: only select high-quality steel, after several special process treatment, the original vertical hole wall becomes the shape hole wall we want to achieve. The process is difficult, but because of its unique hole wall shape, we have a new look in demoulding and anti tin bead, and achieve the real cleaning free effect. It reduces the waste of manpower, material resources (solder paste, red glue, washing water) and time. Secondly, because the solder paste leaked is narrow at the top and wide at the bottom, it is not easy to appear the phenomenon of solder beads. Therefore, the qualified rate of products is greatly improved and the repair rate of products is reduced.

What are the advantages and disadvantages of laser SMT steel mesh compared with other ordinary SMT steel mesh?

Advantages: compared with etched steel mesh and electroformed steel mesh. Laser SMT steel mesh is simple, fast, high precision, easy to use, and the price is moderate. After electropolishing, the quality of laser steel mesh is better and the effect is better. At present, the vast majority of SMT SMT chip processing will use laser steel mesh.

Disadvantages: single thickness, can not do ladder steel mesh, fillet chamfering irregular shape hole processing is not perfect.

  

 SMT steel mesh

Last article: What solvent is used for cleaning SMT steel mesh and what equipment is used for cleaning SMT steel mesh?
Next: Bad BGA welding in SMT chip processing and Solutions
Related information
Hot products
Linchuan precision company SMT steel mesh Manufacturer
Main business: Laser steel mesh Nano steel mesh
Stepped steel mesh FG steel mesh
Service hotline: 0755-29749682/18928403435
Shenzhen Linchuan Precision Technology Co., Ltd
Hotline: 0755-29749682 18928403435
Email: xjx.smt@163.com
Customer service QQ 2549201 25487
Address: 2 / F, block C, Fengrun building, gushiu Huafeng Second Industrial Park, Xixiang, Bao'an District, Shenzhen

Guangming branch: No.16, shangshijia Road, tangxiawei third industrial zone, Guangming District, Shenzhen Yue ICP Bei No. 17051183


Scan more
menu
Telephone About us share
shrink

Online Service

  • customer service  Click here to send me a message
  • customer service  Click here to send me a message
  • Miss Zeng
    eighteen billion nine hundred and twenty-eight million four hundred and three thousand four hundred and thirty-five
  • Mr. Luo
    eighteen billion nine hundred and twenty-three million seven hundred and sixty-eight thousand six hundred and fifty-seven
  • Scan more